Artifact Details Title ECHO-IV module Catalog Number 102681432 Type Physical object Description Object is populated with 14 green and 1 brown component modules, plus several additional components on front of circuit board. Date printed on top of circuit board as "FEB 24 '61". Date 1966 Manufacturer Sutherland, James F. Identifying Numbers Other number 146P255H01 Etched on both sides of circuit board Other number 427A955G01 Etched on rear of circuit board Other number S614C040G04 NOR Molded on top of green component Other number XGB Stamped into handle Dimensions overall: 5 1/2 in x 9 in x 1 in Category Component/module Credit Gift of James F. Sutherland Lot Number X509.84 Related Records X509.84 ECHO-IV Home Computer CPU